Applicable toIf the length of the 4Pin backup camera cable or the dash cam rear view camera cord is not enough, please choose our 4Pin back up camera extension cable to increase the required additional length, making it easy and flexible to neatly hide the wires in nooks and crannies. Pure Copper Thicker Shield Dash Cam Extension CableThis dash cam rearview extension cable use pure copper with a diameter of 3.5mm thick wire (most of the original rear camera cables are 2.8mm). Due to the excessive extension, we must use thick wire with a shielding layer to reduce signal loss, otherwise the video clarity will be reduced. Multiple Length OptionsThis 4Pin mirror camera extension cable can be ordered in different lengths: 5ft. 10ft. 15ft. 20ft. 25ft. The shorter the cable, the more stable the signal. We suggest that you choose the most suitable length of cable. NoteThis is 4pin dash cam rear camera extension cable. Before ordering, please check your backup camera wire plug to